Vietnam Visa Validity: Vietnamese visas are generally issued for single or multiple entries with a validity of one month or three months according to the visa application and depending on the fee. The date of entry is based on dates provided on the Vietnam visa application form, at the discretion of the consulate. Vietnamese visas processed may be issued with a validity of up to 6 months and one year.
Vietnam business visa is normally valid for 6 months and one year, and in some cases, you are entering Vietnam for just a few days for business purposes, you can also apply for a tourist visa instead as this makes no difference.
Do you need a sponsor?
Fortunately, no, with visa on arrival, sponsor is not required to apply for a 6 months and one year visa. However, if you apply for a visa through Vietnamese embassy, they will ask you for a proof of sponsoring letter from Vietnam institutions.
Applying for a business visa is completely the same with a tourist visa.
Is it possible to apply for a business visa for tourism purposes?
Yes, you can apply for a 6 months and one year visas for both tourism and business purposes.
Special Instructions: The Embassy of Vietnam does not issue a Crew type visa. A Business type visa will be issued to the applicant/crew member. Please follow the instructions listed under Business visa.